319 10 3575 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Parveen, Nazma Alim, M A Date A point or period of time associated with an event in the lifecycle of the resource 2012-05-26 Description An account of the resource In this paper, the effect of Joule heating on magnetohydrodynamic natural convection flow of viscous incompressible fluid along a uniformly heated vertical wavy surface has been investigated. The governing boundary layer equations with associated boundary conditions for this phenomenon are converted to nondimensional form using a suitable transformation. The equations are mapped into the domain of a vertical flat plate and then solved numerically employing the implicit finite difference method, known as the Keller-box scheme. Effects of pertinent parameters, such as the Joule heating parameter (J), Prandtl number (Pr), magnetic parameter (M) and the amplitude of the wavy surface ? on the surface shear stress in terms of the skin friction coefficient (Cfx), the rate of heat transfer in terms of local Nusselt number (Nux), the streamlines and the isotherms are discussed. A comparison with previously published work is performed and the results show excellent agreement. DOI: http://dx.doi.org/10.3329/jname.v9i1.5954 Journal of Naval Architecture and Marine Engineering 9(2012) 11-24 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/5954 10.3329/jname.v9i1.5954 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/5954/8026 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 9 No. 1 (2012); 11-24 2070-8998 1813-8535 Subject The topic of the resource Magnetohydrodynamics Joule heating natural convection uniform surface temperature Keller-Box method wavy surface Title A name given to the resource Joule heating effect on magnetohydrodynamic natural convection flow along a vertical wavy surface Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Shivaiah, Sheri Rao, J. A. Date A point or period of time associated with an event in the lifecycle of the resource 2011-07-06 Description An account of the resource In the present study, an unsteady two-dimensional MHD free convection flow chemical reacting fluid past a semi-infinite permeable vertical moving plate in a porous medium with Soret and Dufour effects is analyzed. The dimensionless governing equations are solved numerically by a finite element method. Computations are performed for a wide range of the governing flow parameters, viz., the thermal Grashof number, solutal Grashof number, Magnetic field parameter, Permeability parameter, Prandtl number, Heat absorption parameter, Dufour number, Schmidt number, Chemical reaction parameter and Soret number. The effects of these flow parameters on the velocity, temperature and concentration are shown graphically. Finally, the effects of various parameters on the skin-friction coefficient, Nusselt number and Sherwood number are shown in Tables. DOI: http://dx.doi.org/10.3329/jname.v8i1.6054 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6054 10.3329/jname.v8i1.6054 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6054/5898 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 1 (2011); 37-48 2070-8998 1813-8535 Subject The topic of the resource MHD Free convection Porous medium Dufour and Soret effects FEM. Title A name given to the resource Soret and Dufour effects on an unsteady MHD free convection flow past a semi-infinite permeable vertical moving plate in a porous medium with chemical reaction Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion FEM Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Okedoye, Akindele Michael Date A point or period of time associated with an event in the lifecycle of the resource 2014-12-31 Description An account of the resource This paper to study unsteady MHD mixed convection flow past an infinite vertical oscillating plate through porous medium, taking account of the presence of free/forced convection and mass transfer.  Using similarity transformation, the coupled non – linear governing equations are solved numerically by applying the combination of the base scheme submethods – midpoint, and a method enhancement scheme Richardson extrapolation technique together with Fehlberg fourth-fifth order Runge-Kutta shooting iteration method with degree four interpolant. The results are obtained for velocity, temperature, concentration. The effects of various material parameters are discussed on flow variables and presented by graphs.DOI: http://dx.doi.org/10.3329/jname.v11i2.6477 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6477 10.3329/jname.v11i2.6477 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6477/14703 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 11 No. 2 (2014); 167-176 2070-8998 1813-8535 Subject The topic of the resource Mixed convection magnetohydrodynamic flows porous medium mass transfer oscillating plate Title A name given to the resource Unsteady MHD mixed convection flow past an oscillating plate with heat source/sink Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Nasrin, Rehena Date A point or period of time associated with an event in the lifecycle of the resource 2011-04-20 Description An account of the resource A numerical study has been performed to explore the mixed magnetoconvective flow and heat transfer characteristics of fluid contained in a lid-driven cavity having a sinusoidal wavy vertical surface. A heat conducting square body is located at the centre of cavity. The cavity horizontal walls are perfectly insulated while the corrugated right vertical surface is maintained at a uniform temperature higher than the left lid. The flow is assumed to be two-dimensional and Joule heating effect is considered. Calculations are carried out through solving governing equations for different parameters by using Galarkin’s weighted residual finite element method. The flow pattern and the heat transfer characteristics inside the cavity are presented in the form of streamlines, isotherms, average temperature of the fluid and temperature of solid body centre for various values of Prandtl number Pr, Richardson number Ri and magnetic parameter Ha. The heat transfer rate is detected maximum for the highest Pr and absence of magnetic field.DOI: http://dx.doi.org/10.3329/jname.v8i1.6793 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6793 10.3329/jname.v8i1.6793 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6793/5868 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 1 (2011); 13-24 2070-8998 1813-8535 Subject The topic of the resource Mixed magnetoconvection wavy wall cavity finite element method heat conducting body. Title A name given to the resource Mixed magnetoconvection in a lid-driven cavity with a sinusoidal wavy wall and a central heat conducting body Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Finite Element Method Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Gorla, Rama S.R. Chamkha, Ali J. Aloraier, Abdulkareem Date A point or period of time associated with an event in the lifecycle of the resource 2011-07-14 Description An account of the resource A boundary layer analysis is presented for the warm, laminar nanoliquid flow to a melting surface moving parallel to a uniform free stream. The resulting system of non-linear ordinary differential equations is solved numerically using Runge-Kutta method with shooting techniques. Numerical results are obtained for the velocity, temperature and concentration distributions, as well as the friction factor, local Nusselt number and local Sherwood number for several values of the parameters, namely the velocity ratio parameter, melting parameter and nanofluid parameters. The obtained results are presented graphically  and in tabular form and the physical aspects of the problem are discussed.Keywords: Suction/injection; moving surface; nanofluid; boundary layer; shooting technique. doi: http://dx.doi.org/10.3329/jname.v8i2.6830 Journal of Naval Architecture and Marine Engineering 8(2011) 83-92 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6830 10.3329/jname.v8i2.6830 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6830/6946 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 2 (2011); 83-92 2070-8998 1813-8535 Subject The topic of the resource Suction/injection moving surface nanofluid Title A name given to the resource Melting heat transfer in a nanofluid flow past a permeable continuous moving surface Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion boundary layer analysis Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Senousy, Hamada Abou-Elmakarem, Mahmoud Date A point or period of time associated with an event in the lifecycle of the resource 2011-11-29 Description An account of the resource To initialize ship design process, it is very important to be able to develop an initial estimate of ship parameters to satisfy designer required specifications. For new emerging designs, this estimate has to be made based on a limited available set of examples. Moreover, a practical estimate prediction strategy should be flexible enough having no distinction between input (specified constraints) and outputs (parameters required to be estimated), since these vary from one design case to another.  Conventional regression-based techniques, which are usually employed to provide the required estimates, suffer from low accuracy in case of a small number of available examples. In addition to that, they fail to capture the interrelation between different design parameters. To overcome these limitations and others, the present paper proposes a new approach based on a system of artificial neural-networks (ANNs). The new approach not only overcomes regression limitations but is also capable of providing a reliable estimate of initial design offset table based on different ANN outputs.  The paper uses a case study for demonstrating the merits of the proposed approach.Keywords: Ship design; regression; ship series; Artificial Neural Networks (ANNs); Multilayer Perceptrons (MLPs); Normalized Gaussian Modified Lagrangian (NGML) doi: http://dx.doi.org/10.3329/jname.v8i2.6945 Journal of Naval Architecture and Marine Engineering 8(2011) 71-82 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6945 10.3329/jname.v8i2.6945 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6945/6947 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 2 (2011); 71-82 2070-8998 1813-8535 Subject The topic of the resource Ship design regression ship series Artificial Neural Networks (ANNs) Multilayer Perceptrons (MLPs) Normalized Gaussian Modified Lagrangian (NGML) Title A name given to the resource A flexible system for initial ship design parameters estimation using a system of neural networks Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Sakthivel, R Vengadesan, S Bhattacharyya, S K Date A point or period of time associated with an event in the lifecycle of the resource 2011-11-22 Description An account of the resource This paper addresses the Computational Fluid Dynamics Approach (CFD) to simulate the flow over underwater axisymmetric bodies at higher angle of attacks.  Three Dimensional (3D) flow simulation is carried out over MAYA Autonomous Underwater Vehicle (AUV) at a Reynolds number (Re) of 2.09×106. These 3D flows are complex due to cross flow interaction with hull which produces nonlinearity in the flow. Cross flow interaction between pressure side and suction side is studied in the presence of angle of attack. For the present study standard k-ε model, non-linear k-ε model models of turbulence are used for solving the Reynolds Averaged Navier-Stokes Equation (RANS). The non-linear k-ε turbulence model is validated against DARPA Suboff axisymmetric hull and its applicability for flow simulation over underwater axisymmetric hull is examined. The non-linear k-ε model performs well in 3D complex turbulent flows with flow separation and flow reattachment.  The effect of angle of attack over flow structure, force coefficients and wall related flow variables are discussed in detail. Keywords: Computational Fluid Dynamics (CFD); Autonomous Underwater Vehicle (AUV); Reynolds averaged Navier-Stokes Equation (RANS); non-linear k-ε turbulence modeldoi: http://dx.doi.org/10.3329/jname.v8i2.6984   Journal of Naval Architecture and Marine Engineering 8(2011) 149-163 Format The file format, physical medium, or dimensions of the resource application/pdf application/msword image/jpeg application/msword Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/6984 10.3329/jname.v8i2.6984 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/6984/6945 https://www.banglajol.info/index.php/JNAME/article/view/6984/26734 https://www.banglajol.info/index.php/JNAME/article/view/6984/26735 https://www.banglajol.info/index.php/JNAME/article/view/6984/26736 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 2 (2011); 149-163 2070-8998 1813-8535 Subject The topic of the resource Computational Fluid Dynamics (CFD) Autonomous Underwater Vehicle (AUV) Reynolds averaged Navier-Stokes Equation (RANS) non-linear k-? turbulence model Title A name given to the resource Application of non-linear k-e turbulence model in flow simulation over underwater axisymmetric hull at higher angle of attack Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Numerical Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Chamkha, Ali J. Al-Amin, M. F. Aly, Abdelraheem Date A point or period of time associated with an event in the lifecycle of the resource 2011-06-01 Description An account of the resource This work is focused on the numerical solution of unsteady double-diffusive free convective flow along a vertical isothermal cylinder in the presence of a transverse magnetic field, first-order homogeneous chemical reaction, thermal radiation and Soret and Dufour effects. The Rosseland approximation is used to describe the radiative heat flux in the energy equation. The governing equations are formulated and a numerical solution is obtained by using an explicit finite-difference scheme. The solutions at each time step have been found to reach the steady state solution properly. Representative results for the fluid velocity, temperature and solute concentration profiles as well as the local heat and mass transfer rates for various values of the physical parameters are displayed in both graphical and tabular forms. DOI: http://dx.doi.org/10.3329/jname.v8i1.7250 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/7250 10.3329/jname.v8i1.7250 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/7250/5869 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 1 (2011); 25-36 2070-8998 1813-8535 Subject The topic of the resource Finite-difference solution MHD unsteady flow cylinder chemical reaction Soret and Dufour effects thermal radiation. Title A name given to the resource Unsteady double-diffusive natural convective MHD flow along a vertical cylinder in the presence of chemical reaction, thermal radiation and Soret and Dufour effects Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Altosole, M. Figari, Massimo Date A point or period of time associated with an event in the lifecycle of the resource 2011-12-30 Description An account of the resource In the last year, the Department of Naval Architecture and Marine Engineering of Genoa University (now Department of Naval Architecture, Marine Technology and Electrical Engineering) collaborated to the design of the propulsion automation of two different naval vessels; within these projects the authors developed different ship propulsion simulators used to design and test the propulsion control schemes. In these time-domain simulators, each propulsion component is represented by a specific mathematical model, mainly based on algebraic and differential equations. One of the key aspects of the propulsion simulation is the engine dynamics. This problem in principle can be dealt with models based on thermodynamic principles, which are able to represent in detail the behaviour of many variables of interest (engine power and speed, air and gas pressures, temperatures, stresses, etc.). However, thermodynamic models are often characterized by a long computation-time and moreover their development usually requires the knowledge of specific engine information not always available. It is generally preferable to adopt simpler simulation models, for the development of which, very few kinds of information are necessary. In fact, for the rapid prototyping of control schemes, it is generally more important to model the whole plant (in a relatively coarse way) rather than the detailed model of some components. This paper deals with simple mathematical methods, able to represent the engine power or torque only, but they can be suitably applied to many types of marine engines in a straightforward way. The proposed simulation approaches derived from the authors’ experience, gained during their activity in the marine simulation field, and they are particularly suitable for a fast prototyping of the marine propulsion control systems. The validation process of these particular models, regarding a Diesel engine, a marine gas turbine and an electric motor, is illustrated based on the sea trials data and engine manufacturers’ data. Keywords: Dynamic simulation; marine engines performance; gas turbine; propulsion control. doi: http://dx.doi.org/10.3329/jname.v8i2.7366   Journal of Naval Architecture and Marine Engineering 8(2011) 129-147 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/7366 10.3329/jname.v8i2.7366 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/7366/6943 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 2 (2011); 129-147 2070-8998 1813-8535 Subject The topic of the resource Dynamic simulation marine engines performance gas turbine propulsion control Title A name given to the resource Effective simple methods for numerical modelling of marine engines in ship propulsion control systems design Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Karim, M. M. Rahman, M. M. Alim, M. A. Date A point or period of time associated with an event in the lifecycle of the resource 2011-07-04 Description An account of the resource Two-dimensional Finite Volume Method (FVM) based on Reynolds-averaged Navier-Stokes (RANS) equations is applied to solve the turbulent viscous flow around sphere and pod. Unstructured grid with boundary layer treatment is constructed around sphere whereas structured grid is generated around pod. Spalart-Allmaras (S-A) and Shear Stress Transport (SST) k-? turbulence models are used for sphere but SST k-? turbulence model is used only for pod to solve turbulent viscous flows at Reynold’s number of 5×106 and 3×106 respectively.  The numerical results in terms of the skin friction coefficient, pressure coefficient and drag coefficient are shown either graphically or in the tabular form. Velocity vectors as well as contour of pressure and velocity distribution are also displayed. Finally, the comparative study between flows around sphere and pod is done.DOI: http://dx.doi.org/10.3329/jname.v8i1.7388 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/7388 10.3329/jname.v8i1.7388 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/7388/5899 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 8 No. 1 (2011); 49-58 2070-8998 1813-8535 Title A name given to the resource Comparative study between flows around sphere and pod using finite volume method Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion